🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.13

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.51 AU - 0.61 AU

Year: 271 Days

Day: 26.2 Hours

Environment

Temp: -116 °C

Axial Tilt: 16.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 1.32 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 2 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 163.7

Radius: 14

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 1.83 AU - 2.31 AU

Year: 1923 Days

Day: 5 Hours

Environment

Temp: -193 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 15,867,643 km

• M1: 197,619 km (0.113 R)
• M2: 292,913 km (0.088 R)
• M3: 398,529 km (0.089 R)
• M4: 630,405 km (0.034 R)
• M5: 838,496 km (0.068 R)
• M6: 955,033 km (0.052 R)
• M7: 1,111,063 km (0.065 R)
• M8: 1,276,070 km (0.098 R)
• M9: 1,624,334 km (0.118 R)
• M10: 1,733,989 km (0.094 R)
• M11: 1,887,177 km (0.05 R)
• M12: 2,011,343 km (0.112 R)
• M13: 2,155,556 km (0.076 R)
• M14: 2,285,855 km (0.096 R)
• M15: 2,463,727 km (0.053 R)
• M16: 3,015,594 km (0.099 R)
• M17: 3,513,456 km (0.103 R)
• M18: 3,688,784 km (0.089 R)
• M19: 4,275,956 km (0.118 R)
• M20: 4,575,002 km (0.107 R)
• M21: 4,664,910 km (0.113 R)
• M22: 4,778,306 km (0.102 R)
• M23: 4,973,082 km (0.111 R)
• M24: 5,158,733 km (0.117 R)
• M25: 5,299,654 km (0.12 R)
• M26: 5,465,558 km (0.041 R)
• M27: 5,585,237 km (0.075 R)
• M28: 5,949,358 km (0.104 R)
• M29: 6,060,210 km (0.097 R)
• M30: 6,171,660 km (0.097 R)
• M31: 6,497,634 km (0.084 R)
• M32: 6,586,345 km (0.086 R)
• M33: 6,945,380 km (0.12 R)
• M34: 7,192,815 km (0.11 R)
• M35: 7,629,192 km (0.109 R)
• M36: 7,763,232 km (0.103 R)
• M37: 8,074,545 km (0.059 R)
• M38: 8,169,989 km (0.059 R)
• M39: 8,472,775 km (0.102 R)
• M40: 8,667,401 km (0.114 R)
• M41: 8,765,238 km (0.088 R)
• M42: 9,117,841 km (0.067 R)
• M43: 9,360,189 km (0.054 R)
• M44: 9,475,080 km (0.075 R)
• M45: 9,633,654 km (0.091 R)
• M46: 9,807,786 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 401.6

Radius: 15

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 1.98 AU - 2.6 AU

Year: 2238 Days

Day: 14.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 42.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 15,867,643 km

• M1: 227,838 km (0.115 R)
• M2: 325,974 km (0.041 R)
• M3: 428,448 km (0.099 R)
• M4: 580,739 km (0.099 R)
• M5: 676,182 km (0.094 R)
• M6: 926,908 km (0.083 R)
• M7: 1,129,614 km (0.086 R)
• M8: 1,282,951 km (0.078 R)
• M9: 1,376,600 km (0.06 R)
• M10: 1,521,859 km (0.067 R)
• M11: 1,734,288 km (0.118 R)
• M12: 1,860,399 km (0.12 R)
• M13: 2,011,493 km (0.096 R)
• M14: 2,122,046 km (0.084 R)
• M15: 2,513,843 km (0.113 R)
• M16: 2,829,345 km (0.083 R)
• M17: 3,042,671 km (0.097 R)
• M18: 3,157,861 km (0.092 R)
• M19: 3,287,563 km (0.111 R)
• M20: 3,392,730 km (0.089 R)
• M21: 3,498,945 km (0.091 R)
• M22: 3,674,124 km (0.104 R)
• M23: 3,769,717 km (0.115 R)
• M24: 3,977,359 km (0.083 R)
• M25: 4,245,737 km (0.047 R)
• M26: 4,800,895 km (0.082 R)
• M27: 4,935,832 km (0.087 R)
• M28: 5,209,447 km (0.097 R)
• M29: 5,550,829 km (0.118 R)
• M30: 5,867,528 km (0.117 R)
• M31: 6,353,870 km (0.066 R)
• M32: 6,535,482 km (0.099 R)
• M33: 6,702,134 km (0.064 R)
• M34: 7,039,627 km (0.078 R)
• M35: 7,331,044 km (0.056 R)
• M36: 7,591,494 km (0.101 R)
• M37: 7,978,952 km (0.093 R)
• M38: 8,175,224 km (0.116 R)
• M39: 8,282,935 km (0.103 R)
• M40: 8,427,297 km (0.078 R)
• M41: 8,773,466 km (0.096 R)
• M42: 9,236,173 km (0.035 R)
• M43: 10,282,460 km (0.058 R)
• M44: 10,379,399 km (0.102 R)
• M45: 10,535,131 km (0.12 R)
• M46: 10,731,104 km (0.115 R)
• M47: 10,967,768 km (0.032 R)
• M48: 11,206,077 km (0.102 R)
• M49: 11,607,299 km (0.027 R)
• M50: 11,708,277 km (0.097 R)
• M51: 11,829,900 km (0.109 R)
• M52: 11,972,467 km (0.092 R)
• M53: 12,217,957 km (0.101 R)
• M54: 12,320,731 km (0.045 R)
• M55: 12,423,804 km (0.102 R)
• M56: 12,818,294 km (0.109 R)
• M57: 12,964,600 km (0.079 R)
• M58: 13,132,599 km (0.09 R)
• M59: 13,875,801 km (0.103 R)
• M60: 14,458,634 km (0.104 R)
• M61: 14,654,607 km (0.112 R)
• M62: 14,785,805 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.8

Radius: 8.3

Gravity: 12.76 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 2.07 AU - 3.13 AU

Year: 2707 Days

Day: 8.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (77)

Outer Limit: 15,867,643 km

• M1: 103,971 km (0.065 R)
• M2: 204,799 km (0.116 R)
• M3: 283,338 km (0.099 R)
• M4: 353,051 km (0.05 R)
• M5: 496,366 km (0.07 R)
• M6: 584,928 km (0.097 R)
• M7: 698,622 km (0.054 R)
• M8: 799,451 km (0.063 R)
• M9: 949,198 km (0.094 R)
• M10: 1,131,708 km (0.106 R)
• M11: 1,263,952 km (0.106 R)
• M12: 1,745,957 km (0.025 R)
• M13: 1,885,532 km (0.089 R)
• M14: 2,464,775 km (0.113 R)
• M15: 2,766,065 km (0.086 R)
• M16: 3,386,148 km (0.064 R)
• M17: 3,473,214 km (0.117 R)
• M18: 3,739,049 km (0.094 R)
• M19: 3,829,107 km (0.096 R)
• M20: 4,159,270 km (0.107 R)
• M21: 4,215,219 km (0.11 R)
• M22: 4,556,302 km (0.081 R)
• M23: 4,652,643 km (0.07 R)
• M24: 4,906,212 km (0.072 R)
• M25: 5,508,642 km (0.101 R)
• M26: 5,570,277 km (0.086 R)
• M27: 5,714,639 km (0.116 R)
• M28: 5,777,021 km (0.097 R)
• M29: 6,564,055 km (0.105 R)
• M30: 6,848,591 km (0.08 R)
• M31: 6,959,143 km (0.108 R)
• M32: 7,025,714 km (0.11 R)
• M33: 7,452,517 km (0.073 R)
• M34: 7,588,950 km (0.085 R)
• M35: 8,401,865 km (0.031 R)
• M36: 8,520,197 km (0.112 R)
• M37: 8,975,124 km (0.077 R)
• M38: 9,169,003 km (0.115 R)
• M39: 9,266,541 km (0.097 R)
• M40: 9,585,633 km (0.059 R)
• M41: 10,008,546 km (0.116 R)
• M42: 10,184,473 km (0.111 R)
• M43: 10,743,969 km (0.093 R)
• M44: 10,975,846 km (0.118 R)
• M45: 11,235,249 km (0.084 R)
• M46: 11,418,057 km (0.03 R)
• M47: 11,707,529 km (0.114 R)
• M48: 11,813,295 km (0.084 R)
• M49: 12,105,908 km (0.075 R)
• M50: 12,589,858 km (0.117 R)
• M51: 13,080,239 km (0.062 R)
• M52: 13,162,668 km (0.091 R)
• M53: 13,883,430 km (0.032 R)
• M54: 14,051,578 km (0.088 R)
• M55: 14,276,873 km (0.11 R)
• M56: 14,333,421 km (0.071 R)
• M57: 14,588,485 km (0.053 R)
• M58: 14,931,214 km (0.063 R)
• M59: 15,218,741 km (0.083 R)
• M60: 15,653,472 km (0.118 R)
• M61: 15,711,666 km (0.089 R)
• M62: 15,974,958 km (0.034 R)
• M63: 16,121,714 km (0.067 R)
• M64: 16,416,721 km (0.106 R)
• M65: 16,564,823 km (0.071 R)
• M66: 16,802,833 km (0.079 R)
• M67: 17,918,235 km (0.094 R)
• M68: 18,438,835 km (0.059 R)
• M69: 18,685,522 km (0.068 R)
• M70: 18,778,273 km (0.074 R)
• M71: 19,903,548 km (0.037 R)
• M72: 20,061,523 km (0.075 R)
• M73: 20,474,413 km (0.072 R)
• M74: 20,665,899 km (0.109 R)
• M75: 20,889,996 km (0.078 R)
• M76: 21,243,945 km (0.119 R)
• M77: 21,340,735 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 213.9

Radius: 9.3

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 3.12 AU - 3.84 AU

Year: 4192 Days

Day: 11 Hours

Environment

Temp: -197 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 15,867,643 km

• M1: 117,285 km (0.086 R)
• M2: 182,958 km (0.096 R)
• M3: 277,055 km (0.06 R)
• M4: 395,088 km (0.07 R)
• M5: 472,580 km (0.09 R)
• M6: 532,868 km (0.115 R)
• M7: 654,042 km (0.116 R)
• M8: 758,012 km (0.066 R)
• M9: 973,733 km (0.064 R)
• M10: 1,033,422 km (0.119 R)
• M11: 1,177,634 km (0.11 R)
• M12: 1,440,627 km (0.119 R)
• M13: 2,021,516 km (0.081 R)
• M14: 2,391,472 km (0.086 R)
• M15: 2,840,265 km (0.098 R)
• M16: 3,284,870 km (0.082 R)
• M17: 3,361,015 km (0.057 R)
• M18: 3,943,699 km (0.108 R)
• M19: 4,106,611 km (0.084 R)
• M20: 4,489,582 km (0.065 R)
• M21: 4,711,286 km (0.088 R)
• M22: 4,814,807 km (0.029 R)
• M23: 5,236,524 km (0.086 R)
• M24: 5,984,364 km (0.104 R)
• M25: 6,152,960 km (0.097 R)
• M26: 6,533,388 km (0.104 R)
• M27: 6,745,966 km (0.103 R)
• M28: 7,059,224 km (0.047 R)
• M29: 7,217,648 km (0.063 R)
• M30: 7,537,938 km (0.114 R)
• M31: 7,679,607 km (0.086 R)
• M32: 7,760,988 km (0.111 R)
• M33: 7,904,003 km (0.084 R)
• M34: 7,965,488 km (0.114 R)
• M35: 9,015,067 km (0.088 R)
• M36: 9,100,936 km (0.093 R)
• M37: 9,425,264 km (0.12 R)
• M38: 9,643,677 km (0.114 R)
• M39: 9,797,464 km (0.061 R)
• M40: 10,107,580 km (0.088 R)
• M41: 10,420,988 km (0.1 R)
• M42: 10,646,880 km (0.096 R)
• M43: 11,034,489 km (0.086 R)
• M44: 11,380,359 km (0.076 R)
• M45: 11,450,071 km (0.106 R)
• M46: 11,566,309 km (0.117 R)
• M47: 11,753,306 km (0.114 R)
• M48: 12,487,084 km (0.115 R)
• M49: 12,823,529 km (0.077 R)
• M50: 13,138,433 km (0.071 R)
• M51: 13,455,880 km (0.046 R)
• M52: 14,298,265 km (0.032 R)
• M53: 14,448,761 km (0.106 R)
• M54: 14,549,291 km (0.116 R)
• M55: 14,650,119 km (0.1 R)
• M56: 14,827,094 km (0.065 R)
• M57: 15,234,449 km (0.095 R)
• M58: 15,465,129 km (0.117 R)
• M59: 15,774,497 km (0.043 R)
• M60: 17,005,837 km (0.098 R)
• M61: 17,592,859 km (0.111 R)
• M62: 17,781,053 km (0.116 R)
• M63: 17,996,923 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 12.8

Radius: 8.3

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 3.99 AU - 5.59 AU

Year: 6769 Days

Day: 11 Hours

Environment

Temp: -207 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 15,867,643 km

• M1: 183,706 km (0.055 R)
• M2: 256,710 km (0.063 R)
• M3: 347,965 km (0.075 R)
• M4: 537,206 km (0.073 R)
• M5: 589,864 km (0.098 R)
• M6: 666,907 km (0.093 R)
• M7: 747,690 km (0.113 R)
• M8: 958,025 km (0.076 R)
• M9: 1,010,384 km (0.116 R)
• M10: 1,083,986 km (0.111 R)
• M11: 1,215,632 km (0.069 R)
• M12: 1,338,003 km (0.078 R)
• M13: 1,449,304 km (0.057 R)
• M14: 1,851,423 km (0.035 R)
• M15: 1,909,168 km (0.059 R)
• M16: 1,976,038 km (0.116 R)
• M17: 2,060,860 km (0.118 R)
• M18: 2,466,420 km (0.102 R)
• M19: 2,521,023 km (0.074 R)
• M20: 2,659,701 km (0.092 R)
• M21: 2,915,812 km (0.106 R)
• M22: 3,380,463 km (0.113 R)
• M23: 3,461,844 km (0.113 R)
• M24: 3,689,083 km (0.078 R)
• M25: 4,039,292 km (0.035 R)
• M26: 4,223,896 km (0.115 R)
• M27: 4,322,630 km (0.04 R)
• M28: 4,669,099 km (0.099 R)
• M29: 4,737,166 km (0.094 R)
• M30: 4,805,532 km (0.059 R)
• M31: 4,862,828 km (0.069 R)
• M32: 5,519,862 km (0.095 R)
• M33: 5,640,139 km (0.082 R)
• M34: 5,737,078 km (0.099 R)
• M35: 6,080,405 km (0.074 R)
• M36: 6,279,670 km (0.101 R)
• M37: 7,058,925 km (0.099 R)
• M38: 7,124,150 km (0.117 R)
• M39: 7,242,033 km (0.089 R)
• M40: 7,347,350 km (0.104 R)
• M41: 7,479,894 km (0.104 R)
• M42: 7,559,629 km (0.081 R)
• M43: 8,085,615 km (0.066 R)
• M44: 8,222,348 km (0.101 R)
• M45: 8,346,065 km (0.08 R)
• M46: 8,442,705 km (0.104 R)
• M47: 8,539,794 km (0.051 R)
• M48: 8,637,183 km (0.119 R)
• M49: 8,861,280 km (0.116 R)
• M50: 8,931,741 km (0.111 R)
• M51: 9,002,351 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196.7

Radius: 13.1

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 4.42 AU - 5.42 AU

Year: 7046 Days

Day: 7.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 15,867,643 km

• M1: 163,660 km (0.097 R)
• M2: 546,930 km (0.105 R)
• M3: 633,547 km (0.097 R)
• M4: 736,470 km (0.068 R)
• M5: 1,171,351 km (0.058 R)
• M6: 1,494,184 km (0.101 R)
• M7: 1,770,042 km (0.068 R)
• M8: 1,953,000 km (0.083 R)
• M9: 2,078,662 km (0.118 R)
• M10: 2,174,704 km (0.107 R)
• M11: 2,455,200 km (0.118 R)
• M12: 2,539,873 km (0.102 R)
• M13: 2,730,012 km (0.113 R)
• M14: 2,817,975 km (0.111 R)
• M15: 2,960,841 km (0.104 R)
• M16: 3,142,902 km (0.056 R)
• M17: 3,235,353 km (0.07 R)
• M18: 3,537,541 km (0.12 R)
• M19: 3,692,075 km (0.066 R)
• M20: 3,809,510 km (0.115 R)
• M21: 4,128,752 km (0.068 R)
• M22: 4,415,381 km (0.119 R)
• M23: 4,687,350 km (0.096 R)
• M24: 4,965,004 km (0.096 R)
• M25: 5,182,220 km (0.092 R)
• M26: 5,648,816 km (0.081 R)
• M27: 5,830,128 km (0.1 R)
• M28: 6,268,749 km (0.094 R)
• M29: 6,958,695 km (0.11 R)
• M30: 7,300,376 km (0.084 R)
• M31: 7,722,840 km (0.109 R)
• M32: 8,178,964 km (0.069 R)
• M33: 8,487,884 km (0.113 R)
• M34: 8,774,514 km (0.073 R)
• M35: 9,064,285 km (0.062 R)
• M36: 9,197,127 km (0.086 R)
• M37: 9,707,555 km (0.111 R)
• M38: 9,897,994 km (0.075 R)
• M39: 10,227,408 km (0.104 R)
• M40: 10,644,188 km (0.102 R)
• M41: 10,756,386 km (0.103 R)
• M42: 10,953,406 km (0.065 R)
• M43: 11,095,076 km (0.091 R)
• M44: 11,208,620 km (0.071 R)
• M45: 11,811,949 km (0.032 R)
• M46: 12,249,223 km (0.111 R)
• M47: 12,662,263 km (0.039 R)
• M48: 12,900,273 km (0.101 R)
• M49: 13,623,429 km (0.091 R)
• M50: 13,898,091 km (0.105 R)
• M51: 14,608,232 km (0.113 R)
• M52: 14,857,911 km (0.077 R)
• M53: 15,203,781 km (0.097 R)
• M54: 15,839,123 km (0.113 R)
• M55: 16,386,203 km (0.044 R)
• M56: 16,743,442 km (0.114 R)
• M57: 17,004,940 km (0.114 R)
• M58: 17,169,048 km (0.114 R)
• M59: 17,366,667 km (0.084 R)
• M60: 17,598,095 km (0.063 R)
• M61: 18,030,882 km (0.118 R)
• M62: 18,131,112 km (0.087 R)
• M63: 18,298,812 km (0.118 R)
• M64: 19,452,660 km (0.09 R)
• M65: 20,629,846 km (0.096 R)
• M66: 20,734,863 km (0.1 R)
• M67: 21,439,320 km (0.034 R)
• M68: 21,652,197 km (0.097 R)
• M69: 22,295,169 km (0.088 R)
• M70: 23,053,032 km (0.11 R)
• M71: 23,599,662 km (0.098 R)
• M72: 23,709,467 km (0.092 R)
• M73: 24,150,482 km (0.042 R)
• M74: 24,891,590 km (0.071 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.7

Radius: 10.6

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 5.58 AU - 5.76 AU

Year: 8717 Days

Day: 8.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 15,867,643 km

• M1: 194,028 km (0.101 R)
• M2: 340,335 km (0.115 R)
• M3: 429,495 km (0.059 R)
• M4: 528,679 km (0.09 R)
• M5: 659,577 km (0.116 R)
• M6: 802,443 km (0.109 R)
• M7: 1,518,269 km (0.047 R)
• M8: 1,711,549 km (0.088 R)
• M9: 1,788,891 km (0.118 R)
• M10: 1,935,946 km (0.072 R)
• M11: 2,388,779 km (0.086 R)
• M12: 2,756,341 km (0.095 R)
• M13: 2,834,730 km (0.12 R)
• M14: 2,940,346 km (0.104 R)
• M15: 3,101,313 km (0.06 R)
• M16: 3,223,984 km (0.097 R)
• M17: 4,755,866 km (0.12 R)
• M18: 5,829,380 km (0.104 R)
• M19: 5,998,426 km (0.074 R)
• M20: 6,169,117 km (0.079 R)
• M21: 6,289,543 km (0.102 R)
• M22: 6,550,292 km (0.076 R)
• M23: 6,638,106 km (0.072 R)
• M24: 6,761,525 km (0.072 R)
• M25: 7,046,658 km (0.081 R)
• M26: 7,702,645 km (0.079 R)
• M27: 8,646,009 km (0.114 R)
• M28: 9,605,679 km (0.078 R)
• M29: 9,745,404 km (0.097 R)
• M30: 10,951,013 km (0.087 R)
• M31: 11,709,624 km (0.085 R)
• M32: 13,634,500 km (0.099 R)
• M33: 13,769,287 km (0.104 R)
• M34: 14,564,549 km (0.085 R)
• M35: 14,748,405 km (0.102 R)
• M36: 15,491,458 km (0.101 R)
• M37: 15,702,690 km (0.103 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 435 - 15,072 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit